How to setup a ubuntu server that can receive iOS ASIHTTPRequests

I have a ub开发者_运维问答untu PC that I don't use for anything and I already know how to submit ASIHTTPRequests from an iPhone.

I would like to setup a very basic system where I can send an image from iPhone to my Ubuntu server and have my server just save that photo to a specific folder on my Ubuntu PC.

I have ZERO server knowledge but from what I have heard, this shouldn't be too terribly difficult to implement. Does anyone know of an easy way to do this? (Easy for someone with no server knowledge?)

Any web server will do. https://help.ubuntu.com/6.06/ubuntu/serverguide/C/httpd.html